I had a PDP8I in a 19" 6ft high rack and when we moved in to a new house it occupied the spare bedroom. The mains is 240v in the uk. I would feel a "tingle" when I brushed my hand over the frame. Never had that in the previous home. On investigation
I found that the 3 pin wall socket had earth and neutral reversed. I checked every socket and foud one where live and neutral were reversed and 2 had the earth folded back also lots of loose screws.
Dave
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Many decades ago, while working at Motorola, one of the engineering workbenches gave me a very slight tingle.
I traced down the reason: The hot wire was interchanged with the ground wire!
As a result, the workbench ground and all the test equipment were continuous at 120VAC.
It had been that way for a long time. By luck there was no other grounded object within reach.
Bertho
